#include<stdio.h>
int x=5,y=7;
void swap()
{
int z;
z=x;
x=y;
y=z;
}
int main()
{
int x=3,y=8;
swap();
printf("%d,%d\n",x, y);
int u[5+3]={1,2,3,4};
char c2[]={'\x10','\xa','\8'};
return 0;
}